#line 2 "ast-lex.cc"
/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header:
 * /home/vadve/Teaching/CVSClassRepository/CS426-Current/MPSolutions/mp2-text/cool-support/src/ast-lex.cc,v
 * 1.1 2011-09-29 13:07:27 bmmoore Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>
#include <unistd.h>

/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif

#ifdef __cplusplus

#include <stdlib.h>

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST

#else /* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif /* __STDC__ */
#endif /* ! __cplusplus */

#ifdef __TURBOC__
#pragma warn - rch
#pragma warn - use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif

#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif

/* Returned upon end-of-file. */
#define YY_NULL 0

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int)(unsigned char)c)

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN yy_start = 1 + 2 *

/* Translate the current start state into a value that can be later handed
 * to BEGIN to return to the state.  The YYSTATE alias is for lex
 * compatibility.
 */
#define YY_START ((yy_start - 1) / 2)
#define YYSTATE YY_START

/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)

/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart(yyin)

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct yy_buffer_state *YY_BUFFER_STATE;

extern int yyleng;
extern FILE *yyin, *yyout;

#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 * 	if ( condition_holds )
 *		yyless( 5 );
 *	else
 *		do_something_else();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define yyless(n)                                                              \
  do {                                                                         \
    /* Undo effects of setting up yytext. */                                   \
    *yy_cp = yy_hold_char;                                                     \
    YY_RESTORE_YY_MORE_OFFSET                                                  \
    yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ;                              \
    YY_DO_BEFORE_ACTION; /* set up yytext again */                             \
  } while (0)

#define unput(c) yyunput(c, yytext_ptr)

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int yy_size_t;

struct yy_buffer_state {
  FILE *yy_input_file;

  char *yy_ch_buf;  /* input buffer */
  char *yy_buf_pos; /* current position in input buffer */

  /* Size of input buffer in bytes, not including room for EOB
   * characters.
   */
  yy_size_t yy_buf_size;

  /* Number of characters read into yy_ch_buf, not including EOB
   * characters.
   */
  int yy_n_chars;

  /* Whether we "own" the buffer - i.e., we know we created it,
   * and can realloc() it to grow it, and should free() it to
   * delete it.
   */
  int yy_is_our_buffer;

  /* Whether this is an "interactive" input source; if so, and
   * if we're using stdio for input, then we want to use getc()
   * instead of fread(), to make sure we stop fetching input after
   * each newline.
   */
  int yy_is_interactive;

  /* Whether we're considered to be at the beginning of a line.
   * If so, '^' rules will be active on the next match, otherwise
   * not.
   */
  int yy_at_bol;

  /* Whether to try to fill the input buffer when we reach the
   * end of it.
   */
  int yy_fill_buffer;

  int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
  /* When an EOF's been seen but there's still some text to process
   * then we mark the buffer as YY_EOF_PENDING, to indicate that we
   * shouldn't try reading from the input source any more.  We might
   * still have a bunch of tokens to match, though, because of
   * possible backing-up.
   *
   * When we actually see the EOF, we change the status to "new"
   * (via yyrestart()), so that the user can continue scanning by
   * just pointing yyin at a new input file.
   */
#define YY_BUFFER_EOF_PENDING 2
};

static YY_BUFFER_STATE yy_current_buffer = 0;

/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 */
#define YY_CURRENT_BUFFER yy_current_buffer

/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;

static int yy_n_chars; /* number of characters read into yy_ch_buf */

int yyleng;

/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *)0;
static int yy_init = 1;  /* whether we need to initialize */
static int yy_start = 0; /* start state number */

/* Flag which is used to allow yywrap()'s to do buffer switches
 * instead of setting up a fresh yyin.  A bit of a hack ...
 */
static int yy_did_buffer_switch_on_eof;

void yyrestart YY_PROTO((FILE * input_file));

void yy_switch_to_buffer YY_PROTO((YY_BUFFER_STATE new_buffer));
void yy_load_buffer_state YY_PROTO((void));
YY_BUFFER_STATE yy_create_buffer YY_PROTO((FILE * file, int size));
void yy_delete_buffer YY_PROTO((YY_BUFFER_STATE b));
void yy_init_buffer YY_PROTO((YY_BUFFER_STATE b, FILE *file));
void yy_flush_buffer YY_PROTO((YY_BUFFER_STATE b));
#define YY_FLUSH_BUFFER yy_flush_buffer(yy_current_buffer)

YY_BUFFER_STATE yy_scan_buffer YY_PROTO((char *base, yy_size_t size));
YY_BUFFER_STATE yy_scan_string YY_PROTO((yyconst char *yy_str));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO((yyconst char *bytes, int len));

static void *yy_flex_alloc YY_PROTO((yy_size_t));
static void *yy_flex_realloc YY_PROTO((void *, yy_size_t));
static void yy_flex_free YY_PROTO((void *));

#define yy_new_buffer yy_create_buffer

#define yy_set_interactive(is_interactive)                                     \
  {                                                                            \
    if (!yy_current_buffer)                                                    \
      yy_current_buffer = yy_create_buffer(yyin, YY_BUF_SIZE);                 \
    yy_current_buffer->yy_is_interactive = is_interactive;                     \
  }

#define yy_set_bol(at_bol)                                                     \
  {                                                                            \
    if (!yy_current_buffer)                                                    \
      yy_current_buffer = yy_create_buffer(yyin, YY_BUF_SIZE);                 \
    yy_current_buffer->yy_at_bol = at_bol;                                     \
  }

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)

#define FLEX_DEBUG
typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *)0, *yyout = (FILE *)0;
typedef int yy_state_type;

#define FLEX_DEBUG
extern char *yytext;
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state YY_PROTO((void));
static yy_state_type yy_try_NUL_trans YY_PROTO((yy_state_type current_state));
static int yy_get_next_buffer YY_PROTO((void));
static void yy_fatal_error YY_PROTO((yyconst char msg[]));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION                                                    \
  yytext_ptr = yy_bp;                                                          \
  yyleng = (int)(yy_cp - yy_bp);                                               \
  yy_hold_char = *yy_cp;                                                       \
  *yy_cp = '\0';                                                               \
  yy_c_buf_p = yy_cp;

#define YY_NUM_RULES 47
#define YY_END_OF_BUFFER 48
static yyconst short int yy_accept[163] = {
    0,  0,  0,  0,  0,  48, 47, 1,  37, 3,  35, 2,  36, 47, 46, 38, 45,
    1,  3,  2,  36, 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  44, 45, 43, 41, 42, 39, 40, 0,  0,  0,  0,  0,  0,  0,  0,  24,
    0,  0,  0,  0,  0,  23, 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  27, 0,  25, 17, 0,  0,  20,
    22, 30, 0,  0,  0,  0,  0,  0,  19, 0,  0,  7,  0,  29, 0,  0,

    26, 13, 0,  0,  0,  0,  14, 0,  0,  0,  0,  18, 0,  0,  0,  0,  0,
    16, 0,  5,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  10, 9,
    0,  21, 8,  31, 6,  0,  0,  34, 0,  0,  28, 0,  0,  32, 33, 4,  0,
    15, 12, 0,  0,  0,  0,  0,  0,  0,  11, 0};

static yyconst int yy_ec[256] = {
    0,  1,  1,  1,  1,  1,  1,  1,  2,  2,  3,  2,  2,  2,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  4,  5,  1,  1,
    1,  1,  6,  6,  1,  1,  1,  1,  1,  1,  7,  7,  7,  7,  7,  7,  7,  7,  7,
    7,  6,  1,  1,  1,  1,  1,  1,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,
    8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  1,  9,  1,  1,
    10, 1,  11, 12, 13, 14,

    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
    34, 35, 8,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,

    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1};

static yyconst int yy_meta[36] = {0, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 2,
                                  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
                                  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};

static yyconst short int yy_base[166] = {
    0,   0,   10,  18,  20,  180, 181, 23,  181, 172, 181, 171, 0,   19,  181,
    181, 46,  34,  170, 169, 0,   10,  29,  34,  156, 147, 148, 23,  48,  46,
    3,   160, 38,  34,  136, 181, 163, 181, 181, 181, 181, 181, 140, 138, 142,
    141, 154, 153, 44,  40,  181, 135, 132, 129, 44,  135, 181, 129, 136, 58,
    147, 136, 124, 129, 68,  141, 126, 132, 122, 136, 126, 123, 117, 119, 130,
    117, 123, 118, 181, 115, 181, 181, 113, 120, 181, 181, 181, 65,  122, 107,
    118, 104, 114, 181, 119, 114, 181, 109, 181, 116, 99,

    181, 181, 116, 112, 114, 105, 181, 98,  88,  86,  107, 181, 91,  99,  93,
    105, 91,  181, 96,  181, 83,  97,  89,  96,  95,  82,  81,  76,  94,  91,
    86,  73,  181, 181, 88,  181, 181, 181, 181, 66,  78,  181, 69,  80,  181,
    74,  70,  181, 181, 181, 73,  181, 181, 67,  56,  58,  72,  52,  68,  28,
    181, 181, 96,  98,  6};

static yyconst short int yy_def[166] = {
    0,   163, 163, 164, 164, 162, 162, 162, 162, 162, 162, 162, 165, 162, 162,
    162, 162, 162, 162, 162, 165, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,

    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 0,   162, 162, 162};

static yyconst short int yy_nxt[217] = {
    0,   6,   7,   7,   8,   9,   10,  11,  20,  6,   13,  6,   7,   7,   8,
    9,   10,  11,  59,  6,   13,  6,   15,  6,   15,  17,  17,  16,  60,  16,
    21,  22,  23,  24,  25,  26,  17,  17,  27,  42,  43,  28,  29,  30,  31,
    32,  161, 52,  33,  34,  35,  44,  53,  36,  45,  37,  47,  46,  38,  48,
    62,  57,  39,  54,  64,  65,  63,  73,  74,  75,  40,  80,  76,  55,  81,
    85,  41,  58,  56,  91,  109, 160, 159, 158, 157, 156, 155, 154, 153, 152,
    151, 86,  150, 149, 148, 110, 92,  12,  12,  14,  14,

    147, 146, 145, 144, 143, 142, 141, 140, 139, 138, 137, 136, 135, 134, 133,
    132, 131, 130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 120, 119, 118,
    117, 116, 115, 114, 113, 112, 111, 108, 107, 106, 105, 104, 103, 102, 101,
    100, 99,  98,  97,  96,  95,  94,  93,  90,  89,  88,  87,  84,  83,  82,
    79,  78,  77,  72,  71,  70,  69,  68,  67,  36,  66,  61,  51,  50,  49,
    19,  18,  19,  18,  162, 5,   162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162,

    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162};

static yyconst short int yy_chk[217] = {
    0,   1,   1,   1,   1,   1,   1,   1,   165, 1,   1,   2,   2,   2,   2,
    2,   2,   2,   30,  2,   2,   3,   3,   4,   4,   7,   7,   3,   30,  4,
    13,  13,  13,  13,  13,  13,  17,  17,  13,  21,  21,  13,  13,  13,  13,
    13,  160, 27,  13,  13,  16,  22,  27,  16,  22,  16,  23,  22,  16,  23,
    32,  29,  16,  28,  33,  33,  32,  48,  48,  49,  16,  54,  49,  28,  54,
    59,  16,  29,  28,  64,  87,  159, 158, 157, 156, 155, 154, 151, 147, 146,
    144, 59,  143, 141, 140, 87,  64,  163, 163, 164, 164,

    135, 132, 131, 130, 129, 128, 127, 126, 125, 124, 123, 122, 121, 119, 117,
    116, 115, 114, 113, 111, 110, 109, 108, 106, 105, 104, 103, 100, 99,  97,
    95,  94,  92,  91,  90,  89,  88,  83,  82,  79,  77,  76,  75,  74,  73,
    72,  71,  70,  69,  68,  67,  66,  65,  63,  62,  61,  60,  58,  57,  55,
    53,  52,  51,  47,  46,  45,  44,  43,  42,  36,  34,  31,  26,  25,  24,
    19,  18,  11,  9,   5,   162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162, 162, 162, 162, 162, 162, 162, 162, 162, 162,

    162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162, 162,
    162};

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

extern int yy_flex_debug;
int yy_flex_debug = 0;

static yyconst short int yy_rule_linenum[47] = {
    0,  47, 48, 51, 54, 55,  56,  57,  58,  59,  60,  61,  62,  63,  64, 65,
    66, 67, 68, 69, 70, 71,  72,  73,  74,  75,  76,  77,  78,  79,  80, 81,
    82, 83, 84, 86, 89, 101, 103, 113, 114, 115, 116, 117, 118, 120, 125};

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "ast.flex"
#define INITIAL 0
/*
 *  A scanner definition for COOL ASTs.
 */
#line 5 "ast.flex"
#include "ast_parse.h"
#include "stringtab.h"
#include "utils.h"

extern FILE *ast_file; /* we read from this file */

/* define YY_INPUT so we read from the FILE fin:
 * This change makes it possible to use this scanner in
 * the Cool compiler.
 */
#undef YY_INPUT
#define YY_INPUT(buf, result, max_size)                                        \
  if ((result = fread((char *)buf, sizeof(char), max_size, ast_file)) < 0)     \
    YY_FATAL_ERROR("read() in flex scanner failed");

char string_buf[MAX_STR_CONST]; /* to assemble string constants */
char *string_buf_ptr;

extern int verbose_flag;
YYSTYPE cool_yylval; /* needed to link ast code with utilities.cc */
#define yywrap() 1

#define STRING 1

#line 519 "ast-lex.cc"

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap YY_PROTO((void));
#else
extern int yywrap YY_PROTO((void));
#endif
#endif

#ifndef YY_NO_UNPUT
static void yyunput YY_PROTO((int c, char *buf_ptr));
#endif

#ifndef yytext_ptr
static void yy_flex_strncpy YY_PROTO((char *, yyconst char *, int));
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YY_PROTO((yyconst char *));
#endif

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int yyinput YY_PROTO((void));
#else
static int input YY_PROTO((void));
#endif
#endif

#if YY_STACK_USED
static int yy_start_stack_ptr = 0;
static int yy_start_stack_depth = 0;
static int *yy_start_stack = 0;
#ifndef YY_NO_PUSH_STATE
static void yy_push_state YY_PROTO((int new_state));
#endif
#ifndef YY_NO_POP_STATE
static void yy_pop_state YY_PROTO((void));
#endif
#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO((void));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void)fwrite(yytext, yyleng, 1, yyout)
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf, result, max_size)                                        \
  if (yy_current_buffer->yy_is_interactive) {                                  \
    int c = '*', n;                                                            \
    for (n = 0; n < max_size && (c = getc(yyin)) != EOF && c != '\n'; ++n)     \
      buf[n] = (char)c;                                                        \
    if (c == '\n')                                                             \
      buf[n++] = (char)c;                                                      \
    if (c == EOF && ferror(yyin))                                              \
      YY_FATAL_ERROR("input in flex scanner failed");                          \
    result = n;                                                                \
  } else if (((result = fread(buf, 1, max_size, yyin)) == 0) && ferror(yyin))  \
    YY_FATAL_ERROR("input in flex scanner failed");
#endif

/* No semi-colon after return; correct usage is to write "yyterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error(msg)
#endif

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL int yylex YY_PROTO((void))
#endif

/* Code executed at the beginning of each rule, after yytext and yyleng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP YY_USER_ACTION

YY_DECL {
  register yy_state_type yy_current_state;
  register char *yy_cp = NULL, *yy_bp = NULL;
  register int yy_act;

#line 45 "ast.flex"

#line 673 "ast-lex.cc"

  if (yy_init) {
    yy_init = 0;

#ifdef YY_USER_INIT
    YY_USER_INIT;
#endif

    if (!yy_start)
      yy_start = 1; /* first start state */

    if (!yyin)
      yyin = stdin;

    if (!yyout)
      yyout = stdout;

    if (!yy_current_buffer)
      yy_current_buffer = yy_create_buffer(yyin, YY_BUF_SIZE);

    yy_load_buffer_state();
  }

  while (1) /* loops until end-of-file is reached */
  {
    yy_cp = yy_c_buf_p;

    /* Support of yytext. */
    *yy_cp = yy_hold_char;

    /* yy_bp points to the position in yy_ch_buf of the start of
     * the current run.
     */
    yy_bp = yy_cp;

    yy_current_state = yy_start;
  yy_match:
    do {
      register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
      if (yy_accept[yy_current_state]) {
        yy_last_accepting_state = yy_current_state;
        yy_last_accepting_cpos = yy_cp;
      }
      while (yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state) {
        yy_current_state = (int)yy_def[yy_current_state];
        if (yy_current_state >= 163)
          yy_c = yy_meta[(unsigned int)yy_c];
      }
      yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int)yy_c];
      ++yy_cp;
    } while (yy_base[yy_current_state] != 181);

  yy_find_action:
    yy_act = yy_accept[yy_current_state];
    if (yy_act == 0) { /* have to back up */
      yy_cp = yy_last_accepting_cpos;
      yy_current_state = yy_last_accepting_state;
      yy_act = yy_accept[yy_current_state];
    }

    YY_DO_BEFORE_ACTION;

  do_action: /* This label is used only to access EOF actions. */

    if (yy_flex_debug) {
      if (yy_act == 0)
        fprintf(stderr, "--scanner backing up\n");
      else if (yy_act < 47)
        fprintf(stderr, "--accepting rule at line %d (\"%s\")\n",
                yy_rule_linenum[yy_act], yytext);
      else if (yy_act == 47)
        fprintf(stderr, "--accepting default rule (\"%s\")\n", yytext);
      else if (yy_act == 48)
        fprintf(stderr, "--(end of buffer or a NUL)\n");
      else
        fprintf(stderr, "--EOF (start condition %d)\n", YY_START);
    }

    switch (yy_act) { /* beginning of action switch */
    case 0:           /* must back up */
      /* undo the effects of YY_DO_BEFORE_ACTION */
      *yy_cp = yy_hold_char;
      yy_cp = yy_last_accepting_cpos;
      yy_current_state = yy_last_accepting_state;
      goto yy_find_action;

    case 1:
      YY_RULE_SETUP
#line 47 "ast.flex"
      {
      }
      YY_BREAK
    case 2:
      YY_RULE_SETUP
#line 48 "ast.flex"
      {
        yylval.symbol = inttable.add_string(std::string(yytext, yyleng));
        return (INT_CONST);
      }
      YY_BREAK
    case 3:
      YY_RULE_SETUP
#line 51 "ast.flex"
      {
        yylval.lineno = atoi(yytext + 1);
        return (LINENO);
      }
      YY_BREAK
    case 4:
      YY_RULE_SETUP
#line 54 "ast.flex"
      {
        return (PROGRAM);
      }
      YY_BREAK
    case 5:
      YY_RULE_SETUP
#line 55 "ast.flex"
      {
        return (CLASS);
      }
      YY_BREAK
    case 6:
      YY_RULE_SETUP
#line 56 "ast.flex"
      {
        return (METHOD);
      }
      YY_BREAK
    case 7:
      YY_RULE_SETUP
#line 57 "ast.flex"
      {
        return (ATTR);
      }
      YY_BREAK
    case 8:
      YY_RULE_SETUP
#line 58 "ast.flex"
      {
        return (FORMAL);
      }
      YY_BREAK
    case 9:
      YY_RULE_SETUP
#line 59 "ast.flex"
      {
        return (BRANCH);
      }
      YY_BREAK
    case 10:
      YY_RULE_SETUP
#line 60 "ast.flex"
      {
        return (ASSIGN);
      }
      YY_BREAK
    case 11:
      YY_RULE_SETUP
#line 61 "ast.flex"
      {
        return (STATIC_DISPATCH);
      }
      YY_BREAK
    case 12:
      YY_RULE_SETUP
#line 62 "ast.flex"
      {
        return (DISPATCH);
      }
      YY_BREAK
    case 13:
      YY_RULE_SETUP
#line 63 "ast.flex"
      {
        return (COND);
      }
      YY_BREAK
    case 14:
      YY_RULE_SETUP
#line 64 "ast.flex"
      {
        return (LOOP);
      }
      YY_BREAK
    case 15:
      YY_RULE_SETUP
#line 65 "ast.flex"
      {
        return (TYPCASE);
      }
      YY_BREAK
    case 16:
      YY_RULE_SETUP
#line 66 "ast.flex"
      {
        return (BLOCK);
      }
      YY_BREAK
    case 17:
      YY_RULE_SETUP
#line 67 "ast.flex"
      {
        return (LET);
      }
      YY_BREAK
    case 18:
      YY_RULE_SETUP
#line 68 "ast.flex"
      {
        return (PLUS);
      }
      YY_BREAK
    case 19:
      YY_RULE_SETUP
#line 69 "ast.flex"
      {
        return (SUB);
      }
      YY_BREAK
    case 20:
      YY_RULE_SETUP
#line 70 "ast.flex"
      {
        return (MUL);
      }
      YY_BREAK
    case 21:
      YY_RULE_SETUP
#line 71 "ast.flex"
      {
        return (DIVIDE);
      }
      YY_BREAK
    case 22:
      YY_RULE_SETUP
#line 72 "ast.flex"
      {
        return (NEG);
      }
      YY_BREAK
    case 23:
      YY_RULE_SETUP
#line 73 "ast.flex"
      {
        return (LESSTHAN);
      }
      YY_BREAK
    case 24:
      YY_RULE_SETUP
#line 74 "ast.flex"
      {
        return (EQUAL);
      }
      YY_BREAK
    case 25:
      YY_RULE_SETUP
#line 75 "ast.flex"
      {
        return (LEQ);
      }
      YY_BREAK
    case 26:
      YY_RULE_SETUP
#line 76 "ast.flex"
      {
        return (COMP);
      }
      YY_BREAK
    case 27:
      YY_RULE_SETUP
#line 77 "ast.flex"
      {
        return (INT);
      }
      YY_BREAK
    case 28:
      YY_RULE_SETUP
#line 78 "ast.flex"
      {
        return (STR);
      }
      YY_BREAK
    case 29:
      YY_RULE_SETUP
#line 79 "ast.flex"
      {
        return (BOOL);
      }
      YY_BREAK
    case 30:
      YY_RULE_SETUP
#line 80 "ast.flex"
      {
        return (NEW);
      }
      YY_BREAK
    case 31:
      YY_RULE_SETUP
#line 81 "ast.flex"
      {
        return (ISVOID);
      }
      YY_BREAK
    case 32:
      YY_RULE_SETUP
#line 82 "ast.flex"
      {
        return (NO_EXPR);
      }
      YY_BREAK
    case 33:
      YY_RULE_SETUP
#line 83 "ast.flex"
      {
        return (NO_TYPE);
      }
      YY_BREAK
    case 34:
      YY_RULE_SETUP
#line 84 "ast.flex"
      {
        return (OBJECT);
      }
      YY_BREAK
    case 35:
      YY_RULE_SETUP
#line 86 "ast.flex"
      {
        return (*yytext);
      }
      YY_BREAK
    case 36:
      YY_RULE_SETUP
#line 89 "ast.flex"
      {
        yylval.symbol = idtable.add_string(std::string(yytext, yyleng));
        return (IDENT);
      }
      YY_BREAK
    /*
     *  String constants (C syntax, taken from lexdoc(1) )
     *  Escape sequence \c is accepted for all characters c. Except for
     *  \n \t \b \f, the result is c.
     *
     */
    case 37:
      YY_RULE_SETUP
#line 101 "ast.flex"
      string_buf_ptr = string_buf;
      BEGIN(STRING);
      YY_BREAK
    case 38:
      YY_RULE_SETUP
#line 103 "ast.flex"
      {
        /* saw closing quote - all done */

        BEGIN(INITIAL);
        *string_buf_ptr = '\0';
        yylval.symbol = stringtable.add_string(std::string(string_buf));
        return (STR_CONST);
      }
      YY_BREAK
    case 39:
      YY_RULE_SETUP
#line 113 "ast.flex"
      {
        *string_buf_ptr++ = '\n';
      }
      YY_BREAK
    case 40:
      YY_RULE_SETUP
#line 114 "ast.flex"
      {
        *string_buf_ptr++ = '\t';
      }
      YY_BREAK
    case 41:
      YY_RULE_SETUP
#line 115 "ast.flex"
      {
        *string_buf_ptr++ = '\b';
      }
      YY_BREAK
    case 42:
      YY_RULE_SETUP
#line 116 "ast.flex"
      {
        *string_buf_ptr++ = '\f';
      }
      YY_BREAK
    case 43:
      YY_RULE_SETUP
#line 117 "ast.flex"
      {
        *string_buf_ptr++ = '\\';
      }
      YY_BREAK
    case 44:
      YY_RULE_SETUP
#line 118 "ast.flex"
      {
        *string_buf_ptr++ = '\"';
      }
      YY_BREAK
    case 45:
      YY_RULE_SETUP
#line 120 "ast.flex"
      {
        /* unprintable characters are represented as octal numbers */
        *string_buf_ptr++ = strtol(yytext + 1, 0, 8);
      }
      YY_BREAK
    case 46:
      YY_RULE_SETUP
#line 125 "ast.flex"
      {
        *string_buf_ptr++ = yytext[0];
      }
      YY_BREAK
    case YY_STATE_EOF(INITIAL):
    case YY_STATE_EOF(STRING):
#line 127 "ast.flex"
    {
      yyterminate();
    }
      YY_BREAK
    case 47:
      YY_RULE_SETUP
#line 129 "ast.flex"
      ECHO;
      YY_BREAK
#line 1031 "ast-lex.cc"

    case YY_END_OF_BUFFER: {
      /* Amount of text matched not including the EOB char. */
      int yy_amount_of_matched_text = (int)(yy_cp - yytext_ptr) - 1;

      /* Undo the effects of YY_DO_BEFORE_ACTION. */
      *yy_cp = yy_hold_char;
      YY_RESTORE_YY_MORE_OFFSET

      if (yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW) {
        /* We're scanning a new file or input source.  It's
         * possible that this happened because the user
         * just pointed yyin at a new source and called
         * yylex().  If so, then we have to assure
         * consistency between yy_current_buffer and our
         * globals.  Here is the right place to do so, because
         * this is the first action (other than possibly a
         * back-up) that will match for the new input source.
         */
        yy_n_chars = yy_current_buffer->yy_n_chars;
        yy_current_buffer->yy_input_file = yyin;
        yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
      }

      /* Note that here we test for yy_c_buf_p "<=" to the position
       * of the first EOB in the buffer, since yy_c_buf_p will
       * already have been incremented past the NUL character
       * (since all states make transitions on EOB to the
       * end-of-buffer state).  Contrast this with the test
       * in input().
       */
      if (yy_c_buf_p <=
          &yy_current_buffer
               ->yy_ch_buf[yy_n_chars]) { /* This was really a NUL. */
        yy_state_type yy_next_state;

        yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;

        yy_current_state = yy_get_previous_state();

        /* Okay, we're now positioned to make the NUL
         * transition.  We couldn't have
         * yy_get_previous_state() go ahead and do it
         * for us because it doesn't know how to deal
         * with the possibility of jamming (and we don't
         * want to build jamming into it because then it
         * will run more slowly).
         */

        yy_next_state = yy_try_NUL_trans(yy_current_state);

        yy_bp = yytext_ptr + YY_MORE_ADJ;

        if (yy_next_state) {
          /* Consume the NUL. */
          yy_cp = ++yy_c_buf_p;
          yy_current_state = yy_next_state;
          goto yy_match;
        }

        else {
          yy_cp = yy_c_buf_p;
          goto yy_find_action;
        }
      }

      else
        switch (yy_get_next_buffer()) {
        case EOB_ACT_END_OF_FILE: {
          yy_did_buffer_switch_on_eof = 0;

          if (yywrap()) {
            /* Note: because we've taken care in
             * yy_get_next_buffer() to have set up
             * yytext, we can now set up
             * yy_c_buf_p so that if some total
             * hoser (like flex itself) wants to
             * call the scanner after we return the
             * YY_NULL, it'll still work - another
             * YY_NULL will get returned.
             */
            yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;

            yy_act = YY_STATE_EOF(YY_START);
            goto do_action;
          }

          else {
            if (!yy_did_buffer_switch_on_eof)
              YY_NEW_FILE;
          }
          break;
        }

        case EOB_ACT_CONTINUE_SCAN:
          yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;

          yy_current_state = yy_get_previous_state();

          yy_cp = yy_c_buf_p;
          yy_bp = yytext_ptr + YY_MORE_ADJ;
          goto yy_match;

        case EOB_ACT_LAST_MATCH:
          yy_c_buf_p = &yy_current_buffer->yy_ch_buf[yy_n_chars];

          yy_current_state = yy_get_previous_state();

          yy_cp = yy_c_buf_p;
          yy_bp = yytext_ptr + YY_MORE_ADJ;
          goto yy_find_action;
        }
      break;
    }

    default:
      YY_FATAL_ERROR("fatal flex scanner internal error--no action found");
    } /* end of action switch */
  }   /* end of scanning one token */
} /* end of yylex */

/* yy_get_next_buffer - try to read in a new buffer
 *
 * Returns a code representing an action:
 *	EOB_ACT_LAST_MATCH -
 *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *	EOB_ACT_END_OF_FILE - end of file
 */

static int yy_get_next_buffer() {
  register char *dest = yy_current_buffer->yy_ch_buf;
  register char *source = yytext_ptr;
  register int number_to_move, i;
  int ret_val;

  if (yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1])
    YY_FATAL_ERROR("fatal flex scanner internal error--end of buffer missed");

  if (yy_current_buffer->yy_fill_buffer ==
      0) { /* Don't try to fill the buffer, so this is an EOF. */
    if (yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1) {
      /* We matched a single character, the EOB, so
       * treat this as a final EOF.
       */
      return EOB_ACT_END_OF_FILE;
    }

    else {
      /* We matched some text prior to the EOB, first
       * process it.
       */
      return EOB_ACT_LAST_MATCH;
    }
  }

  /* Try to read more data. */

  /* First move last chars to start of buffer. */
  number_to_move = (int)(yy_c_buf_p - yytext_ptr) - 1;

  for (i = 0; i < number_to_move; ++i)
    *(dest++) = *(source++);

  if (yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING)
    /* don't do the read, it's not guaranteed to return an EOF,
     * just force an EOF
     */
    yy_current_buffer->yy_n_chars = yy_n_chars = 0;

  else {
    int num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1;

    while (num_to_read <= 0) { /* Not enough room in the buffer - grow it. */
#ifdef YY_USES_REJECT
      YY_FATAL_ERROR("input buffer overflow, can't enlarge buffer because "
                     "scanner uses REJECT");
#else

      /* just a shorter name for the current buffer */
      YY_BUFFER_STATE b = yy_current_buffer;

      int yy_c_buf_p_offset = (int)(yy_c_buf_p - b->yy_ch_buf);

      if (b->yy_is_our_buffer) {
        int new_size = b->yy_buf_size * 2;

        if (new_size <= 0)
          b->yy_buf_size += b->yy_buf_size / 8;
        else
          b->yy_buf_size *= 2;

        b->yy_ch_buf = (char *)
            /* Include room in for 2 EOB chars. */
            yy_flex_realloc((void *)b->yy_ch_buf, b->yy_buf_size + 2);
      } else
        /* Can't grow it, we don't own it. */
        b->yy_ch_buf = 0;

      if (!b->yy_ch_buf)
        YY_FATAL_ERROR("fatal error - scanner input buffer overflow");

      yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];

      num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1;
#endif
    }

    if (num_to_read > YY_READ_BUF_SIZE)
      num_to_read = YY_READ_BUF_SIZE;

    /* Read in more data. */
    YY_INPUT((&yy_current_buffer->yy_ch_buf[number_to_move]), yy_n_chars,
             num_to_read);

    yy_current_buffer->yy_n_chars = yy_n_chars;
  }

  if (yy_n_chars == 0) {
    if (number_to_move == YY_MORE_ADJ) {
      ret_val = EOB_ACT_END_OF_FILE;
      yyrestart(yyin);
    }

    else {
      ret_val = EOB_ACT_LAST_MATCH;
      yy_current_buffer->yy_buffer_status = YY_BUFFER_EOF_PENDING;
    }
  }

  else
    ret_val = EOB_ACT_CONTINUE_SCAN;

  yy_n_chars += number_to_move;
  yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
  yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;

  yytext_ptr = &yy_current_buffer->yy_ch_buf[0];

  return ret_val;
}

/* yy_get_previous_state - get the state just before the EOB char was reached */

static yy_state_type yy_get_previous_state() {
  register yy_state_type yy_current_state;
  register char *yy_cp;

  yy_current_state = yy_start;

  for (yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp) {
    register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
    if (yy_accept[yy_current_state]) {
      yy_last_accepting_state = yy_current_state;
      yy_last_accepting_cpos = yy_cp;
    }
    while (yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state) {
      yy_current_state = (int)yy_def[yy_current_state];
      if (yy_current_state >= 163)
        yy_c = yy_meta[(unsigned int)yy_c];
    }
    yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int)yy_c];
  }

  return yy_current_state;
}

/* yy_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *	next_state = yy_try_NUL_trans( current_state );
 */

#ifdef YY_USE_PROTOS
static yy_state_type yy_try_NUL_trans(yy_state_type yy_current_state)
#else
static yy_state_type
    yy_try_NUL_trans(yy_current_state) yy_state_type yy_current_state;
#endif
{
  register int yy_is_jam;
  register char *yy_cp = yy_c_buf_p;

  register YY_CHAR yy_c = 1;
  if (yy_accept[yy_current_state]) {
    yy_last_accepting_state = yy_current_state;
    yy_last_accepting_cpos = yy_cp;
  }
  while (yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state) {
    yy_current_state = (int)yy_def[yy_current_state];
    if (yy_current_state >= 163)
      yy_c = yy_meta[(unsigned int)yy_c];
  }
  yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int)yy_c];
  yy_is_jam = (yy_current_state == 162);

  return yy_is_jam ? 0 : yy_current_state;
}

#ifndef YY_NO_UNPUT
#ifdef YY_USE_PROTOS
static void yyunput(int c, register char *yy_bp)
#else
static void yyunput(c, yy_bp) int c;
register char *yy_bp;
#endif
{
  register char *yy_cp = yy_c_buf_p;

  /* undo effects of setting up yytext */
  *yy_cp = yy_hold_char;

  if (yy_cp < yy_current_buffer->yy_ch_buf +
                  2) { /* need to shift things up to make room */
    /* +2 for EOB chars. */
    register int number_to_move = yy_n_chars + 2;
    register char *dest =
        &yy_current_buffer->yy_ch_buf[yy_current_buffer->yy_buf_size + 2];
    register char *source = &yy_current_buffer->yy_ch_buf[number_to_move];

    while (source > yy_current_buffer->yy_ch_buf)
      *--dest = *--source;

    yy_cp += (int)(dest - source);
    yy_bp += (int)(dest - source);
    yy_current_buffer->yy_n_chars = yy_n_chars = yy_current_buffer->yy_buf_size;

    if (yy_cp < yy_current_buffer->yy_ch_buf + 2)
      YY_FATAL_ERROR("flex scanner push-back overflow");
  }

  *--yy_cp = (char)c;

  yytext_ptr = yy_bp;
  yy_hold_char = *yy_cp;
  yy_c_buf_p = yy_cp;
}
#endif /* ifndef YY_NO_UNPUT */

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int yyinput()
#else
static int input()
#endif
{
  int c;

  *yy_c_buf_p = yy_hold_char;

  if (*yy_c_buf_p == YY_END_OF_BUFFER_CHAR) {
    /* yy_c_buf_p now points to the character we want to return.
     * If this occurs *before* the EOB characters, then it's a
     * valid NUL; if not, then we've hit the end of the buffer.
     */
    if (yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars])
      /* This was really a NUL. */
      *yy_c_buf_p = '\0';

    else { /* need more input */
      int offset = yy_c_buf_p - yytext_ptr;
      ++yy_c_buf_p;

      switch (yy_get_next_buffer()) {
      case EOB_ACT_LAST_MATCH:
        /* This happens because yy_g_n_b()
         * sees that we've accumulated a
         * token and flags that we need to
         * try matching the token before
         * proceeding.  But for input(),
         * there's no matching to consider.
         * So convert the EOB_ACT_LAST_MATCH
         * to EOB_ACT_END_OF_FILE.
         */

        /* Reset buffer status. */
        yyrestart(yyin);

        /* fall through */

      case EOB_ACT_END_OF_FILE: {
        if (yywrap())
          return EOF;

        if (!yy_did_buffer_switch_on_eof)
          YY_NEW_FILE;
#ifdef __cplusplus
        return yyinput();
#else
        return input();
#endif
      }

      case EOB_ACT_CONTINUE_SCAN:
        yy_c_buf_p = yytext_ptr + offset;
        break;
      }
    }
  }

  c = *(unsigned char *)yy_c_buf_p; /* cast for 8-bit char's */
  *yy_c_buf_p = '\0';               /* preserve yytext */
  yy_hold_char = *++yy_c_buf_p;

  return c;
}
#endif /* YY_NO_INPUT */

#ifdef YY_USE_PROTOS
void yyrestart(FILE *input_file)
#else
void yyrestart(input_file) FILE *input_file;
#endif
{
  if (!yy_current_buffer)
    yy_current_buffer = yy_create_buffer(yyin, YY_BUF_SIZE);

  yy_init_buffer(yy_current_buffer, input_file);
  yy_load_buffer_state();
}

#ifdef YY_USE_PROTOS
void yy_switch_to_buffer(YY_BUFFER_STATE new_buffer)
#else
void yy_switch_to_buffer(new_buffer) YY_BUFFER_STATE new_buffer;
#endif
{
  if (yy_current_buffer == new_buffer)
    return;

  if (yy_current_buffer) {
    /* Flush out information for old buffer. */
    *yy_c_buf_p = yy_hold_char;
    yy_current_buffer->yy_buf_pos = yy_c_buf_p;
    yy_current_buffer->yy_n_chars = yy_n_chars;
  }

  yy_current_buffer = new_buffer;
  yy_load_buffer_state();

  /* We don't actually know whether we did this switch during
   * EOF (yywrap()) processing, but the only time this flag
   * is looked at is after yywrap() is called, so it's safe
   * to go ahead and always set it.
   */
  yy_did_buffer_switch_on_eof = 1;
}

#ifdef YY_USE_PROTOS
void yy_load_buffer_state(void)
#else
void yy_load_buffer_state()
#endif
{
  yy_n_chars = yy_current_buffer->yy_n_chars;
  yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
  yyin = yy_current_buffer->yy_input_file;
  yy_hold_char = *yy_c_buf_p;
}

#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_create_buffer(FILE *file, int size)
#else
YY_BUFFER_STATE yy_create_buffer(file, size) FILE *file;
int size;
#endif
{
  YY_BUFFER_STATE b;

  b = (YY_BUFFER_STATE)yy_flex_alloc(sizeof(struct yy_buffer_state));
  if (!b)
    YY_FATAL_ERROR("out of dynamic memory in yy_create_buffer()");

  b->yy_buf_size = size;

  /* yy_ch_buf has to be 2 characters longer than the size given because
   * we need to put in 2 end-of-buffer characters.
   */
  b->yy_ch_buf = (char *)yy_flex_alloc(b->yy_buf_size + 2);
  if (!b->yy_ch_buf)
    YY_FATAL_ERROR("out of dynamic memory in yy_create_buffer()");

  b->yy_is_our_buffer = 1;

  yy_init_buffer(b, file);

  return b;
}

#ifdef YY_USE_PROTOS
void yy_delete_buffer(YY_BUFFER_STATE b)
#else
void yy_delete_buffer(b) YY_BUFFER_STATE b;
#endif
{
  if (!b)
    return;

  if (b == yy_current_buffer)
    yy_current_buffer = (YY_BUFFER_STATE)0;

  if (b->yy_is_our_buffer)
    yy_flex_free((void *)b->yy_ch_buf);

  yy_flex_free((void *)b);
}

#ifdef YY_USE_PROTOS
void yy_init_buffer(YY_BUFFER_STATE b, FILE *file)
#else
void yy_init_buffer(b, file) YY_BUFFER_STATE b;
FILE *file;
#endif

{
  yy_flush_buffer(b);

  b->yy_input_file = file;
  b->yy_fill_buffer = 1;

#if YY_ALWAYS_INTERACTIVE
  b->yy_is_interactive = 1;
#else
#if YY_NEVER_INTERACTIVE
  b->yy_is_interactive = 0;
#else
  b->yy_is_interactive = file ? (isatty(fileno(file)) > 0) : 0;
#endif
#endif
}

#ifdef YY_USE_PROTOS
void yy_flush_buffer(YY_BUFFER_STATE b)
#else
void yy_flush_buffer(b) YY_BUFFER_STATE b;
#endif

{
  if (!b)
    return;

  b->yy_n_chars = 0;

  /* We always need two end-of-buffer characters.  The first causes
   * a transition to the end-of-buffer state.  The second causes
   * a jam in that state.
   */
  b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
  b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;

  b->yy_buf_pos = &b->yy_ch_buf[0];

  b->yy_at_bol = 1;
  b->yy_buffer_status = YY_BUFFER_NEW;

  if (b == yy_current_buffer)
    yy_load_buffer_state();
}

#ifndef YY_NO_SCAN_BUFFER
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_buffer(char *base, yy_size_t size)
#else
YY_BUFFER_STATE yy_scan_buffer(base, size) char *base;
yy_size_t size;
#endif
{
  YY_BUFFER_STATE b;

  if (size < 2 || base[size - 2] != YY_END_OF_BUFFER_CHAR ||
      base[size - 1] != YY_END_OF_BUFFER_CHAR)
    /* They forgot to leave room for the EOB's. */
    return 0;

  b = (YY_BUFFER_STATE)yy_flex_alloc(sizeof(struct yy_buffer_state));
  if (!b)
    YY_FATAL_ERROR("out of dynamic memory in yy_scan_buffer()");

  b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
  b->yy_buf_pos = b->yy_ch_buf = base;
  b->yy_is_our_buffer = 0;
  b->yy_input_file = 0;
  b->yy_n_chars = b->yy_buf_size;
  b->yy_is_interactive = 0;
  b->yy_at_bol = 1;
  b->yy_fill_buffer = 0;
  b->yy_buffer_status = YY_BUFFER_NEW;

  yy_switch_to_buffer(b);

  return b;
}
#endif

#ifndef YY_NO_SCAN_STRING
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_string(yyconst char *yy_str)
#else
YY_BUFFER_STATE yy_scan_string(yy_str) yyconst char *yy_str;
#endif
{
  int len;
  for (len = 0; yy_str[len]; ++len)
    ;

  return yy_scan_bytes(yy_str, len);
}
#endif

#ifndef YY_NO_SCAN_BYTES
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_bytes(yyconst char *bytes, int len)
#else
YY_BUFFER_STATE yy_scan_bytes(bytes, len) yyconst char *bytes;
int len;
#endif
{
  YY_BUFFER_STATE b;
  char *buf;
  yy_size_t n;
  int i;

  /* Get memory for full buffer, including space for trailing EOB's. */
  n = len + 2;
  buf = (char *)yy_flex_alloc(n);
  if (!buf)
    YY_FATAL_ERROR("out of dynamic memory in yy_scan_bytes()");

  for (i = 0; i < len; ++i)
    buf[i] = bytes[i];

  buf[len] = buf[len + 1] = YY_END_OF_BUFFER_CHAR;

  b = yy_scan_buffer(buf, n);
  if (!b)
    YY_FATAL_ERROR("bad buffer in yy_scan_bytes()");

  /* It's okay to grow etc. this buffer, and we should throw it
   * away when we're done.
   */
  b->yy_is_our_buffer = 1;

  return b;
}
#endif

#ifndef YY_NO_PUSH_STATE
#ifdef YY_USE_PROTOS
static void yy_push_state(int new_state)
#else
static void yy_push_state(new_state) int new_state;
#endif
{
  if (yy_start_stack_ptr >= yy_start_stack_depth) {
    yy_size_t new_size;

    yy_start_stack_depth += YY_START_STACK_INCR;
    new_size = yy_start_stack_depth * sizeof(int);

    if (!yy_start_stack)
      yy_start_stack = (int *)yy_flex_alloc(new_size);

    else
      yy_start_stack = (int *)yy_flex_realloc((void *)yy_start_stack, new_size);

    if (!yy_start_stack)
      YY_FATAL_ERROR("out of memory expanding start-condition stack");
  }

  yy_start_stack[yy_start_stack_ptr++] = YY_START;

  BEGIN(new_state);
}
#endif

#ifndef YY_NO_POP_STATE
static void yy_pop_state() {
  if (--yy_start_stack_ptr < 0)
    YY_FATAL_ERROR("start-condition stack underflow");

  BEGIN(yy_start_stack[yy_start_stack_ptr]);
}
#endif

#ifndef YY_NO_TOP_STATE
static int yy_top_state() { return yy_start_stack[yy_start_stack_ptr - 1]; }
#endif

#ifndef YY_EXIT_FAILURE
#define YY_EXIT_FAILURE 2
#endif

#ifdef YY_USE_PROTOS
static void yy_fatal_error(yyconst char msg[])
#else
static void yy_fatal_error(msg) char msg[];
#endif
{
  (void)fprintf(stderr, "%s\n", msg);
  exit(YY_EXIT_FAILURE);
}

/* Redefine yyless() so it works in section 3 code. */

#undef yyless
#define yyless(n)                                                              \
  do {                                                                         \
    /* Undo effects of setting up yytext. */                                   \
    yytext[yyleng] = yy_hold_char;                                             \
    yy_c_buf_p = yytext + n;                                                   \
    yy_hold_char = *yy_c_buf_p;                                                \
    *yy_c_buf_p = '\0';                                                        \
    yyleng = n;                                                                \
  } while (0)

/* Internal utility routines. */

#ifndef yytext_ptr
#ifdef YY_USE_PROTOS
static void yy_flex_strncpy(char *s1, yyconst char *s2, int n)
#else
static void yy_flex_strncpy(s1, s2, n) char *s1;
yyconst char *s2;
int n;
#endif
{
  register int i;
  for (i = 0; i < n; ++i)
    s1[i] = s2[i];
}
#endif

#ifdef YY_NEED_STRLEN
#ifdef YY_USE_PROTOS
static int yy_flex_strlen(yyconst char *s)
#else
static int yy_flex_strlen(s) yyconst char *s;
#endif
{
  register int n;
  for (n = 0; s[n]; ++n)
    ;

  return n;
}
#endif

#ifdef YY_USE_PROTOS
static void *yy_flex_alloc(yy_size_t size)
#else
static void *yy_flex_alloc(size) yy_size_t size;
#endif
{
  return (void *)malloc(size);
}

#ifdef YY_USE_PROTOS
static void *yy_flex_realloc(void *ptr, yy_size_t size)
#else
static void *yy_flex_realloc(ptr, size) void *ptr;
yy_size_t size;
#endif
{
  /* The cast to (char *) in the following accommodates both
   * implementations that use char* generic pointers, and those
   * that use void* generic pointers.  It works with the latter
   * because both ANSI C and C++ allow castless assignment from
   * any pointer type to void*, and deal with argument conversions
   * as though doing an assignment.
   */
  return (void *)realloc((char *)ptr, size);
}

#ifdef YY_USE_PROTOS
static void yy_flex_free(void *ptr)
#else
static void yy_flex_free(ptr) void *ptr;
#endif
{
  free(ptr);
}

#if YY_MAIN
int main() {
  yylex();
  return 0;
}
#endif
#line 129 "ast.flex"